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Perpendicular Distance of a Point from a Line

The equation ...

Question

The equation of tangent at $(8, 8)$ to the parabola $y^{2} = 8 x$ is ?

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Solution

The parabola is $y^{2} = 8 x$
The point is $(8, 8)$
The equation of tangent is $S_{1} = 0 8 y - 4 x - 4 (8) = 0 x - 2 y + 8 = 0$

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Perpendicular Distance of a Point from a Line

Standard XII Mathematics

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